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Sold out Limited to 5 stones: 1 loose Australian boulder opal (average 12.5ct) Multiple purchase discounts available

Limited to 5 stones: 1 loose Australian boulder opal (average 12.5ct) Multiple purchase discounts available
Limited to 5 stones: 1 loose purple spinel from Tajikistan (multiple purchase discounts available)

Limited to 5 stones: 1 loose purple spinel from Tajikistan (multiple purchase discounts available) Sale price¥5,980
Sold out [Limited to 5 stones] Turkish color change diaspore 1 stone loose [Multiple purchase discount available]

[Limited to 5 stones] Turkish color change diaspore 1 stone loose [Multiple purchase discount available]

Sold out 《Limited 5 stones》 Paraiba tourmaline from Brazil (Batalha mine, 2.2 x 1.7mm) 《Multiple purchase discount available》

《Limited 5 stones》 Paraiba tourmaline from Brazil (Batalha mine, 2.2 x 1.7mm) 《Multiple purchase discount available》

Sold out Limited to 5 stones: 1 loose Brazilian pink imperial topaz stone. Discounts available for multiple purchases.

Limited to 5 stones: 1 loose Brazilian pink imperial topaz stone. Discounts available for multiple purchases.

Sold out Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount

Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount
Sold out 《Limited to 5 stones》1 stone Sphene from Madagascar《Multiple purchase discount available》(Mr. Sanjay cut)

《Limited to 5 stones》1 stone Sphene from Madagascar《Multiple purchase discount available》(Mr. Sanjay cut)
Limited to 5 stones: 1 loose labradorite stone (20 x 15 mm, for beginners) Multiple purchase discounts available

Limited to 5 stones: 1 loose labradorite stone (20 x 15 mm, for beginners) Multiple purchase discounts available Sale price¥3,980
Sold out [Limited 5 stones] Rare stone gacha 💎 Win Red Beryl, Alexandrite, Paraiba Tourmaline [Multiple purchase discount available]

[Limited 5 stones] Rare stone gacha 💎 Win Red Beryl, Alexandrite, Paraiba Tourmaline [Multiple purchase discount available]
Limited to 5 stones Synthetic Moissanite 1 loose stone (Pink Moissanite, Heart Shape, 6.5mm) Multiple purchase discount available

Limited to 5 stones Synthetic Moissanite 1 loose stone (Pink Moissanite, Heart Shape, 6.5mm) Multiple purchase discount available Sale price¥5,980
Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available

Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available Sale price¥8,800
Limited to 6 sets: Apatite 3-stone set (yellow, green, and blue) Multiple purchase discounts available

Limited to 6 sets: Apatite 3-stone set (yellow, green, and blue) Multiple purchase discounts available Sale price¥5,980
Sold out Limited to 6 sets: Synthetic Alexandrite & Brazilian Alexandrite 2 stone set (Multiple purchase discounts available)

Limited to 6 sets: Synthetic Alexandrite & Brazilian Alexandrite 2 stone set (Multiple purchase discounts available)
[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available] Sale price¥3,980
Limited to 6 stones: Aquamarine + Iolite loose stone set of 2 (March birthstone) Multiple purchase discounts available

Limited to 6 stones: Aquamarine + Iolite loose stone set of 2 (March birthstone) Multiple purchase discounts available Sale price¥2,980
Sold out Limited to 6 stones: 1 Ethiopian opal loose stone (7 x 7 mm) Multiple purchase discounts available (faceted cut)

Limited to 6 stones: 1 Ethiopian opal loose stone (7 x 7 mm) Multiple purchase discounts available (faceted cut)
Sold out [Limited to 6 stones] Sapphire Gacha💎 Tanzanian bicolor sapphire (including crescent sapphire, 3-4mm) [Multiple purchase discount available]

[Limited to 6 stones] Sapphire Gacha💎 Tanzanian bicolor sapphire (including crescent sapphire, 3-4mm) [Multiple purchase discount available]
Limited to 6 stones: 1 loose Mahenge spinel stone from Tanzania (Papara color) Multiple purchase discounts available

Limited to 6 stones: 1 loose Mahenge spinel stone from Tanzania (Papara color) Multiple purchase discounts available Sale price¥3,980
《Limited to 6 stones》1 mint garnet from Tanzania (6 x 4mm, oval cut)《Multiple purchase discount available》

《Limited to 6 stones》1 mint garnet from Tanzania (6 x 4mm, oval cut)《Multiple purchase discount available》 Sale price¥5,980
Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available

Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available Sale price¥3,980
Sold out Limited to 6 stones: Pakistani lazurite (average 0.046ct) 1 loose stone (multiple purchase discounts available)

Limited to 6 stones: Pakistani lazurite (average 0.046ct) 1 loose stone (multiple purchase discounts available)
ブラジル産グリーンクォーツ1石ルース

《Limited to 6 stones》 1 stone loose green quartz from Brazil (8mm, concave cut) 《Discount available for multiple purchases》 Sale price¥3,980
Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available

Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available Sale price¥7,980
Limited to 6 stones: 1 loose black diamond (rose cut, 5mm) Multiple purchase discounts available

Limited to 6 stones: 1 loose black diamond (rose cut, 5mm) Multiple purchase discounts available Sale price¥6,980
Limited to 6 stones: 1 loose, unheated silky pink sapphire from Vietnam (milky pink sapphire) Multiple purchase discounts available

Limited to 6 stones: 1 loose, unheated silky pink sapphire from Vietnam (milky pink sapphire) Multiple purchase discounts available Sale price¥5,980
Sold out Limited to 6 stones: 1 loose petzotite stone from Madagascar (damaged) Multiple purchase discount available

Limited to 6 stones: 1 loose petzotite stone from Madagascar (damaged) Multiple purchase discount available
Limited to 6 stones: Russian phenakite (round cut, 3.3mm) 1 loose stone. Discounts available for multiple purchases.

Limited to 6 stones: Russian phenakite (round cut, 3.3mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥8,800
Sold out Limited to 6 stones Synthetic Moissanite 1 loose stone (round cut, 6mm) Multiple purchase discounts available

Limited to 6 stones Synthetic Moissanite 1 loose stone (round cut, 6mm) Multiple purchase discounts available
Limited to 6 stones: 1 synthetic moissanite loose stone (hexagonal cut, 5mm) Multiple purchase discounts available

Limited to 6 stones: 1 synthetic moissanite loose stone (hexagonal cut, 5mm) Multiple purchase discounts available Sale price¥6,980
Sold out [Limited to 7 sets] October birthstone tourmaline 3 stone set (1 rough stone from Afghanistan, 2 loose 2.5mm stones)

[Limited to 7 sets] October birthstone tourmaline 3 stone set (1 rough stone from Afghanistan, 2 loose 2.5mm stones)

Limited to 7 sets: Single cut & round brilliant cut 2 stone set (VS-SI class equivalent) Multiple purchase discounts available

Limited to 7 sets: Single cut & round brilliant cut 2 stone set (VS-SI class equivalent) Multiple purchase discounts available Sale price¥5,980
Sold out 《Limited to 7 stones》《For beginners》1 stone Bekily Blue Garnet from Madagascar (2.6-2.8mm)《Multiple purchase discount available》

《Limited to 7 stones》《For beginners》1 stone Bekily Blue Garnet from Madagascar (2.6-2.8mm)《Multiple purchase discount available》

[Limited 7 stones] [Mr. KEN] 1 stone loose Andalusite from Spain (Rose cut, 3.5mm) [Multiple purchase discount] [Yuichiro Abe's work motif]

[Limited 7 stones] [Mr. KEN] 1 stone loose Andalusite from Spain (Rose cut, 3.5mm) [Multiple purchase discount] [Yuichiro Abe's work motif] Sale price¥4,980
Limited to 7 stones: 1 loose Australian boulder opal (average 25 carats) Multiple purchase discounts available

Limited to 7 stones: 1 loose Australian boulder opal (average 25 carats) Multiple purchase discounts available Sale price¥8,800
サファイア1石ルース（ロゼンジカット）《複数購入割引有》

《Limited to 7 stones》 1 loose sapphire stone (lozenge cut, approx. 6 x 4 mm) 《Discount available for multiple purchases》 Sale price¥5,980
スピネル原石１石（バイカラーやパープル系）《複数購入割引有》

Limited to 7 stones: 1 rough spinel stone (bicolor spinel, etc.) Multiple purchase discounts available Sale price¥3,980
Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases. Sale price¥4,980
《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》

《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》 Sale price¥3,980
Sold out Limited to 7 stones: 1 loose enstatite cat's eye stone from Nigeria. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose enstatite cat's eye stone from Nigeria. Discounts available for multiple purchases.
マダガスカル産オイルインクォーツ1石ルース（近年発見の新しい産地,平均28ct）《複数購入割引有》

[Limited to 7 stones] 1 loose oil-in-quartz stone from Madagascar (new locality discovered in recent years, average 28ct) [Multiple purchase discounts available] Sale price¥8,800
Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases. Sale price¥3,980
《Limited to 8 items》 1 stone loose sapphire from Sri Lanka (heart shape, 5.5mm) 《Discount available for multiple purchases》

《Limited to 8 items》 1 stone loose sapphire from Sri Lanka (heart shape, 5.5mm) 《Discount available for multiple purchases》 Sale price¥6,980
《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》

《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》 Sale price¥6,980
Limited to 8 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (9 x 7 mm) Multiple purchase discounts available

Limited to 8 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (9 x 7 mm) Multiple purchase discounts available Sale price¥4,980
Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available) Sale price¥8,800
Sold out Limited to 8 stones Conch shell 1 stone loose Multiple purchase discount available

Limited to 8 stones Conch shell 1 stone loose Multiple purchase discount available
Sold out 《Limited to 8 stones》Gem gacha💎Gemstones cut by American polisher KEN (for beginners, iolite, spinel, etc.) 1 loose stone《Multiple purchase discounts available》

《Limited to 8 stones》Gem gacha💎Gemstones cut by American polisher KEN (for beginners, iolite, spinel, etc.) 1 loose stone《Multiple purchase discounts available》
Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases.

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments